This patch adds extack support for the function qdisc_alloc which is a common used function in the tc subsystem. Callers which are interested in the receiving error can assign extack to get a more detailed information why qdisc_alloc failed.
Cc: David Ahern <[email protected]> Acked-by: Jamal Hadi Salim <[email protected]> Signed-off-by: Alexander Aring <[email protected]> --- include/net/sch_generic.h | 3 ++- net/sched/sch_api.c | 2 +- net/sched/sch_generic.c | 6 ++++-- 3 files changed, 7 insertions(+), 4 deletions(-) diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 3baadac9e7a5..faf6b2dbc1b2 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -471,7 +471,8 @@ void qdisc_destroy(struct Qdisc *qdisc); void qdisc_tree_reduce_backlog(struct Qdisc *qdisc, unsigned int n, unsigned int len); struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue, - const struct Qdisc_ops *ops); + const struct Qdisc_ops *ops, + struct netlink_ext_ack *extack); struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue, const struct Qdisc_ops *ops, u32 parentid); void __qdisc_calculate_pkt_len(struct sk_buff *skb, diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 79a9fdf9471d..3a3a1da6b071 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -1052,7 +1052,7 @@ static struct Qdisc *qdisc_create(struct net_device *dev, goto err_out; } - sch = qdisc_alloc(dev_queue, ops); + sch = qdisc_alloc(dev_queue, ops, extack); if (IS_ERR(sch)) { err = PTR_ERR(sch); goto err_out2; diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c index 30bc38c5d7ae..34ef4366f8e0 100644 --- a/net/sched/sch_generic.c +++ b/net/sched/sch_generic.c @@ -755,7 +755,8 @@ static struct lock_class_key qdisc_tx_busylock; static struct lock_class_key qdisc_running_key; struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue, - const struct Qdisc_ops *ops) + const struct Qdisc_ops *ops, + struct netlink_ext_ack *extack) { void *p; struct Qdisc *sch; @@ -764,6 +765,7 @@ struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue, struct net_device *dev; if (!dev_queue) { + NL_SET_ERR_MSG(extack, "No device queue given"); err = -EINVAL; goto errout; } @@ -835,7 +837,7 @@ struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue, if (!try_module_get(ops->owner)) return NULL; - sch = qdisc_alloc(dev_queue, ops); + sch = qdisc_alloc(dev_queue, ops, NULL); if (IS_ERR(sch)) { module_put(ops->owner); return NULL; -- 2.11.0
